Transmission of electric currents.



No. 803,110. PATENTED OCT. 31, 1905. I. KITSEE.

TRANSMISSION OF ELECTRIC GURRENTS.

APPLICATION FILED NOV. 28, 1904.

ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA.

TRANSMISSION OF ELECTRIC CU RRENTS.

Specification of Letters Patent.

Patented Oct. 31, 1905.

Application fil d November 28, 1904. Serial No. 234,629.

tric Currents. of which the following is a specification.

My invention relates toa system for the transmission over long distances of fluctuating or varying electric currents or current impulses, and has particular reference to such complex currents as are characteristic of telephony, though my invention is equally applicable to telegraphy and other arts.

My invention resides in a system in which the so-called outgoing and return lines of conductors are, in elfect, composite conductors, consisting of conductors which are conductively independentof each other but inductively related. Such lines of composite conductors are formed by twisting a plurality of conductors together into intimate relation, so as to, in effect, form a mechanical unit suitable for inclosing in a cable, aerial, subterranean, or submarine. The twisting, however, is an essential element of my invention, and upon it depends the efficient electrical behavior of my system.

Referring to the drawing, 1 and 2 represent separated telephone-stations, each equipped with a telephone set. Each telephone set consists of the microphone or transmitter F, the battery-cells E, and a primary 0 of a transformer or induction-coil C, whose secondary c is connected to line. The telephone-receiver D is also connected in the line-circuit.

A is a line or composite conductor consisting of the conductively-independent insulated wires (0 and a, twisted together throughout their length at the rate of four or five twists per inch, though any other suitable rate of twisting may be adopted. At station 1 the wire a connects to one terminal of the secondary c of the induction-coil C. Theinsulateol wire a extends toward the station 2 in the aforementioned twisted relation with the conductor a, the end of the wire a approximate the station 2 being left free or unconnected. Similarly the wire a is connected at the station 2 to one terminal of the telephonereceiver D and extends toward the station 1 in the aforementioned twisted relation with the conductor a, the end of the wire a approximate the station 1 being left free and unconnected.

B is a line or composite conductor similar to A, and consists of theinsulated wires Z) and b, twisted together, but at no place in conductive contact or engagement with each other. The wire 6 is connected to one terminal of the telephone-receiver D at station 1 and extends toward station 2 in twisted relation with conductor 6, and the end of the conductor 6 approximate station 2.is left free and unconnected. Similarly the wire I) is connected at station 2 with one terminal of the secondary c of the induction-coil C and extends toward station 1 in twisted relation with conductor 6, and the end of the wire 6 approximate station 1 is left free and unconnected.

It is thus seen that the telephone sets at the two stations are not in conductive relation with each other, but are in inductive relation through the media of the composite conductors A and B, forming, in efli'ect, the line-wires.

While I do not desire to advance any particular theory as to the operation of this system, yet I believe the efficiency of the same is dependent upon both the self and mutual electromagnetic induction as affecting or cooperating with the electrostatic capacity.

While I have here illustrated a telephone system, it is to be understood that a telegraph set may be installed at each of the stations. It is to be understood, also, that my system is effective for the transmission of periodic currents, such as alternating currents, for the transmission of either intelligence or power.

The line or composite conductors A and B may be strung upon poles as in ordinary practice, or they may be included in a cable along with the lines of composite conductors or simply the conductors of other systems or circuits.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a system for transmitting varying electric currents, a composite line conductor comprising two insulated and inductively-independent conductors, each consisting of a continuous series of inductive convolutions, said series being in inductive relation with respect to each other throughout the entire lengths of said conductors, each conductor being electrically connected with a single station or side of apparatus.

2. In a system for transmitting varying electric currents, a line comprising a plurality of insulated conductors twisted into intimate relation with one another throughout the entire length of the line, said conductors being conductively independent and each having one end free and unconnected, said unconnected ends of the conductors being at opposite ends of the line.

3. A composite line conductor comprising conductively independent conductors intimately associated together in twisted relation to form a mechanical unit.

4. A composite line conductor comprising conductively-independent conductors twisted together throughout their lengths.

, 5. In combination,aplurality of telephonestations, and a composite line conductor extending between said stations and comprising conductively independent conductors twisted together.

6. In combination, a plurality of telephonestations, and a composite line conductor eX- tending between said stations and comprising a plurality of conductively-independent conductors twisted together throughout their lengths, each conductor having one end connected to a station and its other end free.

7. In combination, a plurality of separated stations, and outgoing and return lines joining said stations, each line being a composite conductor comprising conductively independent conductors twisted together.

8. In combination, separated stations, composite line conductors forming outgoing and return lines joining said stations, each line conductor comprising conductively-independent conductors intimately associated together in twisted relation to form a mechanical unit.

9. In combination, a plurality of telephonestations, and outgoing and return line-conductors joining said stations, each line conductor comprising conductivly-independent conductors twisted together.

10. In combination, a plurality of telephone-stations, outgoing and return composite line conductors oining said stations, each line conductor comprising a plurality of conductively independent conductors twisted together throughout their lengths, each conductor having one end connected to a stationterminal and its other end free. I

11. In a system for the transmission of fluctuating or varying electric currents, outgoing and return lines each comprising a plurality of conductively-independent conductors twisted together. 7

12. In combination, separated stations, four conductors extending between said stations, disposed in two pairs, each pair consiste ing of conductively-independent conductors twisted together.

13. In combination, separated stations, two conductors extending from one station to another and having their remote ends free, and two conductors extending from the other station to the first-mentioned station and having their remote ends free, said conductors being disposed in twisted pairs.

In testimony whereof I hereby sign my name, in the presence of two subscribing witnesses, this 25th day of November, A. D. 1904.

ISIDOR KITSEE.

Witnesses:

EDITH R. STILLEY, H. C. YETTER. 

